How to Retrieve Deleted Facebook Messages
Unfortunately, there is no way to retrieve a Facebook message or conversation that you've already deleted—once you choose to delete a message, it's gone from your side of the conversation for good. While retrieving your data via Facebook...
How to Retrieve Deleted Facebook Messages. Unfortunately, there is no way to retrieve a Facebook message or conversation that you've already deleted—once you choose to delete a message, it's ... It's near the top-right corner of the page.